[Dnsmasq-discuss] ipset action doesn't work in 2.69

Wang Jian larkwang at gmail.com
Sat Apr 12 16:39:38 UTC 2014


Simply 'make' within git tree (checkout v2.69), I get a binary which works.

# ./dnsmasq -v
Dnsmasq version 2.69-1-g97dce08  Copyright (c) 2000-2014 Simon Kelley
Compile time options: IPv6 GNU-getopt no-DBus no-i18n no-IDN DHCP
DHCPv6 no-Lua TFTP no-conntrack ipset auth no-DNSSEC


Running 'git-buildpackage --git-debian-tag=v2.69
--git-upstream-tag=v2.69' in git tree, I get a binary which doesn't
work

# /usr/sbin/dnsmasq -v
Dnsmasq version 2.69-1-g97dce08  Copyright (c) 2000-2014 Simon Kelley
Compile time options: IPv6 GNU-getopt DBus i18n IDN DHCP DHCPv6 no-Lua
TFTP conntrack ipset auth DNSSEC


The 2.69 binary from sid repository doesn't work, either.


2014-04-12 21:06 GMT+08:00 Wang Jian <larkwang at gmail.com>:
> Hi,
>
> I build 2.69 deb package from git tree to use the new ipset action
> log. To my surprise, ipset action stops working.
>
> I traced the process_reply() and found some strange behavior, but I am
> not familiar with util.c, so I can only provide what I found. (break
> at process_reply() then break at hostname_isequal(). )
>
> I use 'host 6pm.com' to trigger the break point.  In the output, you
> can see 6pm.com should be matched but actually not.
>
> ---- snip ----
>
> Breakpoint 1, process_reply (header=header at entry=0x85cb278,
> now=now at entry=1397305916, server=server at entry=0x85d70a8,
>     n=n at entry=267, check_rebind=check_rebind at entry=0,
> no_cache=no_cache at entry=0, cache_secure=0, ad_reqd=0, do_bit=0,
>     added_pheader=0, check_subnet=0,
> query_source=query_source at entry=0x85d2e68) at forward.c:545
> 545     forward.c: No such file or directory.
> (gdb) display ipset_pos->domain
> 1: ipset_pos->domain = 0x85d5040 "6pm.com"
> (gdb) break hostname_isequal
> Breakpoint 2 at 0x8059410: file util.c, line 288.
> (gdb) c
> Continuing.
>
> Breakpoint 2, hostname_isequal (a=a at entry=0x85c9859 "6pm\003com",
> b=b at entry=0x85d5040 "6pm.com") at util.c:288
> 288     util.c: No such file or directory.
> (gdb) display a
> 2: a = 0x85c9859 "6pm\003com"
> (gdb) display b
> 3: b = 0x85d5040 "6pm.com"
> (gdb) c
> Continuing.
>
> Breakpoint 1, process_reply (header=header at entry=0x85cb278,
> now=now at entry=1397305916, server=server at entry=0x85d70a8,
>     n=n at entry=267, check_rebind=check_rebind at entry=0,
> no_cache=no_cache at entry=0, cache_secure=0, ad_reqd=0, do_bit=0,
>     added_pheader=0, check_subnet=0,
> query_source=query_source at entry=0x85d2e68) at forward.c:545
> 545     forward.c: No such file or directory.
> 1: ipset_pos->domain = 0x85d4e68 "zlib.net"
> (gdb)
> Continuing.
>
> Breakpoint 2, hostname_isequal (a=a at entry=0x85c9858
> "\003\066pm\003com", b=b at entry=0x85d4e68 "zlib.net") at util.c:288
> 288     util.c: No such file or directory.
> 3: b = 0x85d4e68 "zlib.net"
> 2: a = 0x85c9858 "\003\066pm\003com"
> (gdb)
> Continuing.
>
> Breakpoint 1, process_reply (header=header at entry=0x85cb278,
> now=now at entry=1397305916, server=server at entry=0x85d70a8,
>     n=n at entry=267, check_rebind=check_rebind at entry=0,
> no_cache=no_cache at entry=0, cache_secure=0, ad_reqd=0, do_bit=0,
>     added_pheader=0, check_subnet=0,
> query_source=query_source at entry=0x85d2e68) at forward.c:545
> 545     forward.c: No such file or directory.
> 1: ipset_pos->domain = 0x85d47c8 "hulu.com"
> (gdb)
> Continuing.
>
> Breakpoint 2, hostname_isequal (a=a at entry=0x85c9858
> "\003\066pm\003com", b=b at entry=0x85d47c8 "hulu.com") at util.c:288
> 288     util.c: No such file or directory.
> 3: b = 0x85d47c8 "hulu.com"
> 2: a = 0x85c9858 "\003\066pm\003com"
> (gdb)
> Continuing.
>
> Breakpoint 2, hostname_isequal (a=a at entry=0x85c9858 "6pm.com",
> b=b at entry=0x85d69b0 "6pm.com") at util.c:288
> 288     in util.c
> 3: b = 0x85d69b0 "6pm.com"
> 2: a = 0x85c9858 "6pm.com"
> (gdb)
> Continuing.
>
> Breakpoint 2, hostname_isequal (a=0x85d69b0 "6pm.com", b=0x85d7240
> "wiki.nginx.org") at util.c:288
> 288     in util.c
> 3: b = 0x85d7240 "wiki.nginx.org"
> 2: a = 0x85d69b0 "6pm.com"
> (gdb)



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